diff -r e66a3ae8211a -r d44efe0e6f40 mercurial/commands.py
--- a/mercurial/commands.py	Wed Oct 03 22:27:45 2018 +0900
+++ b/mercurial/commands.py	Wed Oct 03 22:32:18 2018 +0900
@@ -954,6 +954,14 @@
 
     .. container:: verbose
 
+      Template:
+
+      The following keywords are supported in addition to the common template
+      keywords and functions such as ``{bookmark}``. See also
+      :hg:`help templates`.
+
+      :active:  Boolean. True if the bookmark is active.
+
       Examples:
 
       - create an active bookmark for a new line of development::